Processed locally — your file never leaves your device
JSON to YAML Converter
Convert JSON to YAML, entirely in your browser.
How it works
- Paste JSON, or open a .json file.
- Click Convert — this happens entirely on your device.
- Copy the result or download it as a .yaml file.
Frequently asked questions
- Is my JSON uploaded anywhere?
- No. Conversion happens locally in your browser.
- Does the conversion preserve my data exactly?
- Yes — objects, arrays, strings, numbers, booleans and null all map directly to their YAML equivalents, since YAML is a superset of JSON's data model.
- What if my JSON is invalid?
- You'll see a clear parse error instead of a result.
- Can I open a file instead of pasting?
- Yes, there's an Open file button, or you can paste text directly.
- Is there a size limit?
- There's no server upload limit, since nothing is uploaded.